loci (locus)

A locus (plural: loci) is a specific location or position on a chromosome where a particular gene or genetic marker resides. Think of it as a "address" on a chromosome; each gene has its own unique spot. Understanding loci helps scientists identify where genes are located, study genetic variations, and track inheritance patterns. It’s a fundamental concept in genetics, allowing us to compare genetic material across individuals and species, and to troubleshoot genetic issues or understand traits.